<template>
	<view class="wrap">
		<view class="top"></view>
		<view class="content">
			<view class="title">欢迎登录图书商城</view>
			<input class="u-border-bottom" type="text" v-model="email" placeholder="请输入邮箱" confirm-type="next" @confirm="nextFocus" />
			<view class="tips" v-show="isShowTip">请输入正确的邮箱号</view>
			<input class="u-border-bottom" type="password" v-model="password" placeholder="请输入密码" :focus="isFocus" confirm-type="done" @confirm="submit" />
			<button @tap="submit" :style="[inputStyle]" class="getCaptcha">登录</button>
			<view class="alternative">
				<view class="password">找回密码</view>
				<view class="issue" @click="toRegister">注册账号</view>
			</view>
		</view>
		
	</view>
</template>

<script>
export default {
	data() {
		return {
			email: '',
			password:'',
			isFocus:false // 密码框聚焦
		}
	},
	async onLoad(){

	},
	computed: {
		inputStyle() {
			let style = {};
			if(this.email){
				this.isShowTip=true
			}
			if(this.$u.test.email(this.email)){
				this.isShowTip=false
			}
			if(this.$u.test.email(this.email) && this.password) {
				style.color = "#fff";
				style.backgroundColor = this.$u.color['warning'];
			}
			return style;
		}
	},
	methods: {
		async submit() {
			if(!this.$u.test.email(this.email) && !this.password) return ;
			// 处理登录用的参数
			const params = {
				email:this.email,
				password:this.password
			};
			// 请求api ，执行登录
			const loginRes = await this.$u.api.authLogin(params);
			
			// 缓存token
			this.$u.vuex('vuex_token',loginRes.access_token);
			// 请求用户信息 , 缓存用户信息
			this.$u.utils.updateUser();
			
			this.$u.toast('登录成功');
			
			// 登录之后，跳转到来源页
			const backUrl = uni.getStorageSync('back_url') || 'pages/index/indes';
			
			// 判断，如果是底部tabbar，用switchTab;如果是普通页面，使用recirectTo
			setTimeout(()=>{
				this.$u.route({
					type:'reLaunch', // 使用reLaunch在APP上会导致无法返回首页
					url:backUrl
				});
			},1500)
		},
		nextFocus(){
			// 当邮箱格式正确按回车跳转密码框
			if(this.$u.test.email(this.email)){
				this.$nextTick(()=>{
					this.isFocus=true
				})
			}else{
				this.isShowTip=true
			}
		},
		// 注册跳转
		toRegister(){
			this.$u.route({
				url: 'pages/auth/register'
			})
		},
	}
};
</script>

<style lang="scss" scoped>
	.u-border-bottom{
		margin-bottom: 40rpx !important;
	}
.wrap {
	font-size: 28rpx;
	.content {
		width: 600rpx;
		margin: 80rpx auto 0;

		.title {
			text-align: left;
			font-size: 60rpx;
			font-weight: 500;
			margin-bottom: 100rpx;
		}
		input {
			text-align: left;
			margin-bottom: 10rpx;
			padding-bottom: 6rpx;
		}
		.tips {
			color: $u-type-info;
			margin-bottom: 60rpx;
			margin-top: 8rpx;
		}
		.getCaptcha {
			background-color: rgb(253, 243, 208);
			color: $u-tips-color;
			border: none;
			font-size: 30rpx;
			padding: 12rpx 0;
			
			&::after {
				border: none;
			}
		}
		.alternative {
			color: $u-tips-color;
			display: flex;
			justify-content: space-between;
			margin-top: 30rpx;
		}
	}
}
</style>
